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DEVELOPMENTAL BIOLOGY Correction for “Tissue-specific roles of Axin2 in the inhibition and activation of Wnt signaling in the mouse embryo,” by Lihui Qian, James P. Mahaffey, Heather L. Alcorn, and Kathryn V. Anderson, which appeared in issue 21, May 24, 2011 of Proc Natl Acad Sci USA (108:8692–8697; first published May 9, 2011; 10.1073/pnas.1100328108).

The authors note that on page 8693, left column, first paragraph, line 9, “T-to-C” should instead appear as “T-to-A.” The authors note that on page 8693, right column, first paragraph, lines 3 and 4, “Axin2canp/Axinnull mice (n=15)” should instead appear as “Axin2canp/Axin2null mice (n=15).”

Blood-sucking sand flies from disparate global regions have a predilection for feeding on the marijuana plant (Cannabis sativa), and the findings hint at a potential avenue for controlling sand flies, which can transmit leishmaniasis.